<!DOCTYPE html>
<html lang="en">

	<head>
		<meta charset="UTF-8">
		<title>todolist</title>
		<style type="text/css">
			.list_con {
				width: 600px;
				margin: 50px auto 0;
			}
			
			.inputtxt {
				width: 550px;
				height: 30px;
				border: 1px solid #ccc;
				padding: 0px;
				text-indent: 10px;
			}
			
			.inputbtn {
				width: 40px;
				height: 32px;
				padding: 0px;
				border: 1px solid #ccc;
			}
			
			.list {
				margin: 0;
				padding: 0;
				list-style: none;
				margin-top: 20px;
			}
			
			.list li {
				height: 40px;
				line-height: 40px;
				border-bottom: 1px solid #ccc;
			}
			
			.list li span {
				float: left;
			}
			
			.list li a {
				float: right;
				text-decoration: none;
				margin: 0 10px;
			}
		</style>
	</head>
	<script type="text/javascript" src="../js/vue.min.js"></script>

	<body>

		<div class="list_con" id="app">
			<h2>To do list</h2>
			<input type="text" name="" id="txt1" class="inputtxt">
			<input type="button" name="" value="增加" id="btn1" class="inputbtn">

			<ul id="list" class="list">

				<li v-for="(item,index) in content">
					<span>{{item}}</span>
					<a href="javascript:;" class="up" @click="fnUp(index)"> ↑ </a>
					<a href="javascript:;" class="down" @click="fnDown(index)"> ↓ </a>
					<a href="javascript:;" class="del" @click="fnDel(index)">删除</a>
				</li>

			</ul>

		</div>
	</body>
	<script type="text/javascript">
		var vm = new Vue({
			el:"#app",
			data:{
				content:['学习html','学习JS','学习JQ']
			},
			methods:{
				fnDel:function(index){
					this.content.splice(index)
				},
				fnUp:function(index){
					if (index == 0) {
						alert('ding')
						return
					}
					this.content.splice(index-1,0,this.content[index])
					this.content.splice(index+1,1)
				},
				fnDown:function(index){
					this.content.splice(index+2,0,this.content[index])
					this.content.splice(index,1)
				}
				
			}
		})
	</script>

</html>